Improvement in brake-locks for carriages



G. E. CLARKE. Brake-Lock for Carriages.

"No. 222,456. Patented Dec, 9, 1879, 4

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INVENTOR NJ'EIERS, PNOTD-UTROGRAPNER, WASHINGTON. n C.

. I UNITED STATES PATENT OFFICE.

GREVILLE E. CLARKE, OF RAGINE, VVISGONSIN.

IMPROVEMENT IN BRAKE-LOCKS FOR CARRIAGES.

Specification forming part of Letters Patent No. 222,4 56, dated December 9, 1879 application filed October 25, 1879.

To all whom it may concern:

Be it known that I, GR VILLE E. CLARKE, of Racine, in the county of Racine and State of Wisconsin, have invented certain newand useful Improvements in Looks for Wagon-Brakes and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being hadto the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a side elevation of my'wagon-brake and lock. Fig. 2 is a vertical sectional view, and

Fig. 3 is a detail view.

My invention relates to that class of wagonl A brakes in which the brake-shoes are held on or 5 off the wheels by the adjustment of a pivoted hand-lever upon arack-bar.

My improvement consists in the construction and arrangement of devices for locking the lever upon the rack-bar, as will be fully described in the following specification, and

particularly pointed out in the claims.

Referring by letter to the annexed drawings,

"A. designates a segmental-shaped rack, and B 1 the hand-lever, which is pivoted to a lower part or frame of the rack-bar, the said lever being arranged for actuating the brake-shoes through the medium of anyordinary or suitablo connection. a

To the handlever Bis secured a bracket, D, which is constructed so as to embrace the rack-bar, as shown, andnpon aportion of this levers are brought together in line the wedge will be forced between the lever B and the plain side of the rack-bar, thus drawing the bracket upon the rack and causing an interlocking of their teeth...

In order to prevent too greata play of the lever which carries the wedge, I limit its movement by means of a flanged plate, F, which embraces the same upon two of its sides, and is properly secured to the hand-lever B. The flanges of this plate are beveled at their ends, substantiallyas shown, so as to admit of a sufficient vibration of the lever E to insure a withdrawal of the wedge from between the bracket and hand-lever when it is desired to unlock the brake and shift its position.

What I claim, and desire to secure by Letters Patent, is-

1. In a lock for wagon-brakes, the segmental rack A, pivoted hand -lever B, toothed bracket D, and the pivoted lever E, with a wedge-shaped part, b, at or near its lower extremity, the said members being constructed and combined for operation substantially as set forth.

2. In a lock for wagon-brakes having a rackbar and pivoted hand-lever, the hand-lever adapted to engage with the teeth of the rack by means of gear-teeth which are carried by the said lever, and a supplemental lever pivoted to the hand-lever and arranged when brought in line with the same, or into an equivalent predetermined position to force the teeth of the hand-lever into engagement with the rack, substantially as set forth.

3. In combination with the rack, hand-lever, and the pivoted supplemental lever carrying a wedge, b, the flanged plate F with beveled flanges, and arranged to limit the movement of thesupplemental or looking 1ever upon its fulcrum, substantially as shown and set forth.

In testimony that I claim the fl-b0"6 I have hereunto subscribed my name in the presence of two witnesses.

GREVILLE n. CLARKE. 4

Witnesses CHAS. S. HAZLETT, PHIL. LIVINGSTON. 

